Hi, I noticed that you guys are using Wise Installer Evaluation version for the mod. I don't know whether this topic has ever been brought up or not (my apology if it has), but why not try some of the free ones like Nullsoft's or Inno Setup?
We used InnoSetup for 1.0.0, but the guy who was doing that stuff lost home internet access, and the guy who took over didn't have InnoSetup.